Device for placing cores into removable-flask moulds

ABSTRACT

The device comprises a body, a carrying jig with seats for cores and a drive for reciprocating said body and jig in a direction perpendicular to the jointing plane of the mould. The jig is arranged on guides of the body with a possibility of travelling in respect thereto in the same direction. Mounted in the body are spring-biased pushers which in the course of said relative travel of the body and the jig place the cores into the seats of the mould and protect the cores against damage during the subsequent joint travel of the body and the jig for pushing the mould out of the moulding chamber of the machine and assembling the moulds into a horizontal stack. When the body with the jig moves to the initial position, the jig interacts with the stationary stop which urges the jig out of the body for the pushers to emerge from the seats of the jig. The proposed device combines the operations of placing cores into removable-flask moulds and assembling the moulds into a horizontal stack, which feature simplifies the design of the moulding machine and its control system and adds to the machine efficiency.

United States Patent [191 Popov et al.

[451 Oct. 7, 1975 DEVICE FOR PLACING CORES INTO REMOVABLE-FLASK MOULDS [76] Inventors: Alexei Ivanovich Popov, 531 mikroraion, la, kv. 51; Jury Georgievich Vinjukov, ulitsa Mayakovskogo, l 1, kv. l5; Leonid Iosifovich Matjurin-Veretennikov, ulitsa Poltavskaya, 3, kv.l0; Vladimir Ovseevich Kashket, ulitsa 23 Avgusta, 31a kv. 76; Vladimir Mikhailovich Stepanov, Pavlova-pole, 5 mikroraion, 75, kv. 14, all of Kharkov, USSR,

22 Filed: Aug. 16, 1974 21 Appl. No.: 498,222

[52] [1.8. CI. 164/340; 164/137; 425/468 [51] Int. Cl. B22C 19/00; B22C 23/00 [58] Field of Search 164/40, 137, 187,340; 425/468 [56] References Cited UNITED STATES PATENTS 3,424,229 1/1969 Poulsen 164/340 3,672,441 6/1972 Wells et al. 164/129X 3,709,282 l/l973 Taccone 164/187 FOREIGN PATENTS OR APPLICATIONS 665,501 10/1965 France 164/340 665,503 lO/l965 France 164/340 Primary ExaminerRobert D. Baldwin Attorney, Agent, or FirmWaters, Schwartz 8L Nissen [57] ABSTRACT The device comprises a body, a carrying jig with seats for cores and a drive for reciprocating said body and jig in a direction perpendicular to the jointing plane of the mould. The jig is arranged on guides of the body with a possibility of travelling in respect thereto in the same direction. Mounted in the body are spring-biased pushers which in the course of said relative travel of the body and the jig place the cores into the seats of the mould and protect the cores against damage during the subsequent joint travel of the body and the jig for pushing the mould out of the moulding chamber of the machine and assembling the moulds into a horizontal stack. When the body with the jig moves to the initial position, the jig interacts with the stationary stop which urges the jig outof the body for the pushers to emerge from the seats of the jig. The proposed device combines the operations of placing cores into removable-flask moulds and assembling the moulds into a horizontal stack, which feature simplifies the design of the moulding machine and its control system and adds to the machine efficiency.

3 Claims, 4 Drawing Figures U.S. Patent Oct. 7,1975 Sheet 1 of4 3,910,343

US. Patent Oct.

Sheet 2 0f 4 U.S. Patent Oct. 7,1975 Sheet 3 of4 3,910,343

US. Patent Oct. 7,1975 Sheet4 0f4 3,910,343

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l/lam DEVICE FOR PLACING CORES INTO REMOVABLE-FLASK MOULDS The present invention relates to foundry practice and more particularly to devices for placing cores into removable-flask moulds located in the moulding chamber of a machine adapted to make removable-flask moulds and to assemble them into a continuous horizontal stack.

The device of the present invention may prove to be most advantageous for use in shuttle-type moulding machines.

Known in the art are devices for placing cores into removable-flask moulds, comprising a body, a carrying jig with open core seats, and a drive for reciprocating the body with the jig in a direction perpendicular to the jointing plane of a mould located in the moulding chamber of the machine.

In these prior-art devices the body and the jig are rigidlyinterconnected in the course of their operation. Placing of cores into the seats of the jig is performed manually by the operator when the plane of the jig brought out of the zone of the mould is in a vertical position. For keeping the cores in position in the seats of the jig before placing them into corresponding seats of the mould, said devices are provided with vacuum clamps.

Then the body with the jig and the cores positioned therein is turned in a vertical plane to the initial position to face the jointing plane of the mould, and the drive is started for moving the body and the jig in a direction perpendicular to this plane.

During this travel the cores with their portions extending from the jig enter into the corresponding seats of the mould; at the moment of contact of the plane of the jig and the jointing plane of the mould the cores are released from the vacuum clamps and remain in the seats of the mould.

The subsequent operation of pushing the mould out of the moulding chamber of the machine and of assembling the moulds into a horizontal stack is performed by a separate device.

The necessity of two separate devices, one for placing the cores into the mould and the other for stacking the moulding or moulds, complicates the design of the moulding machine as a whole and its automatic control system in particular, as well as detracts from the accuracy of placing cores into moulds. The use of vacuum clamps dictates the provision of a special vacuum plant.

Moreover, the vertical arrangement of the jig during the placing of cores thereinto is not convenient for the operator.

The object of the present invention is to provide a device for placing cores into removable-flask moulds featuring such a design of its units which would make it capable of both placing cores into removable-flask moulds and pushing moulds out of the moulding chamber.

These and other objects are accomplished by the provision of a device for placing cores into removableflask mould, comprising a body, a carrying jig with open core seats, and a drive for reciprocating the body with the jig in a direction perpendicular to the jointing plane of a mould located in the moulding chamber of a machine adapted to make removable-flask moulds.

According to the invention, mounted in the body of the device are guides on which a jig is arranged so as to be movable in relation to the body in said direction, and spring-biased pushers which are free to enter into the seats of the jig from the side opposite-to the posi tioning of the cores and which act upon the latter in the course of relative movements of the jig and the body, said pushers also acting upon the mould so as to push the latter out of the moulding chamber in the course of subsequent joint movement of the jig and the body; the body of the device is provided with a port and a stationary member is provided with a stop secured thereto from the side opposite to the location of the jig, said stop entering said port in the course of joint movement of the body with the jig to the initial position and urging the jig from the body to a distance sufficient for the pushers to emerge from the seats of the jig.

Such a design enables the device of the invention to perform placing of cores into removable-flask moulds with subsequent pushing thereof out of the moulding chamber of the machine and assembling the moulds into a horizontal stack, the provision in the device of spring-biased pushers ensures pushing the cores out of the jig seats into those of the mould and protection of the cores against damage during subsequent operations.

It is preferable that the body should be associated with a movable member of the drive so that the body be turnable in a vertical plane passing through the plane of the drive axis and the turning of the body in said plane take place concurrently with the jig emerging from the body.

This feature ensures turning of the body with the jig to a position inclined to the horizontal plane, so that placing of cores into the seats of the jig is rendered convenient for the operator.

Each pusher can be made as a pin whose one end is fixed in the body and the other carries. a freely fitted sleeve spring-biased in relation to the body.

The herein-proposed device makes it possible to combine the operations of placing the core into the mould and assembling the moulds into a horizontal stack, thus increasing the efficiency of the moulding machine, simplifying its control system and adding to its reliability. The nature of the invention will be clear from the following detailed description of a particular embodiment thereof, to be had in conjunction with the accompanying drawings, in which:

FIG. 1 is a diagrammatic representation of a device for placing cores into removable-flask moulds, a moulding chamber of a machine with a removable-flask mould located therein and partially a stack of such moulds (longitudinal section);

FIG. 2 shows the device at the moment of placing cores into the seats of the jig (longitudinal section);

FIG. 3 shows the device at the moment of placing a core into the seat of the mould (longitudinal section) and FIG. 4 shows the device at the moment of assembling the moulds into a stack (longitudinal section). Referring now to FIG. 1, the device for placing cores l'into removable-flask moulds 2 is mounted coaxially with moulding chamber 3 of the machine adapted to make removable-flask moulds.

The device comprises a box-shaped body 4 rectangular in cross section with prong-like guides 6 secured in its vertical wall 5; mounted on the guides 6 with its guide sleeves 7 is a jig 8 having a seat 9 for the core 1.

The number of the seats 9 depends on the number of the cores 1 in a changeable jig 8.

Such an arrangement of the jig 8 in the body 4 provides the possibility of their relative movements in a direction perpendicular to a jointing plane 2a of the mould 2.

Mounted on the vertical wall 5 of the body 4 coaxially with the seat 9 of the jig 8 is a pusher 10 which freely enters said seat 9 from the side opposite to the location of the core 1.

In the course of operation of the device its body 4 with the jig 8 reciprocates in the direction perpendicular to the jointing plane 2a of the mould 2 for the core 1 to be placed into a seat 2b of the mould 2,

These reciprocations are effected with the aid of a drive made as a power cylinder 11 mounted horizontally on a bed 12 of the device and articulated through its rod 13 with the body 4 so that the latter can turn in the vertical plane passing through the axis of the power cylinder 11 through an angle 01 thus making it convenient for the operator to place the core 1 into the seat 9 of the jig 8.

For this purpose a flange 14 is secured at the end of the rod 13 of the power cylinder 11, this flange 14 is connected by its upper portion to the body 4 by means of a hinge 15 whose horizontal axis 16 runs parallel to the jointing plane 2a of the mould 2.

On the bed 12 of the device from the side opposite to the location of the jig 8 a stop 17 is secured, bearing a roller 18 on its free end, while in the vertical wall 5 of the body 4 a port 19 is provided for said stop 17 to enter into the body 4 in the course of the device operation.

The pusher 10 consists of a pin 20 whose one end is fixed in the vertical wall 5 of the body 4 and the other end carries a freely fitted sleeve 21 having a collar against which a spring 22 thrusts with its one end, the other end thereof thrusting into a seat in the vertical wall 5 of thebody 4.

The deviceoperates as follows.

In the position for placing cores 1 into the seats 9 of the jig 8, the body 4 with the jig 8 are inclined in the horizontal plane at an angle a convenient for the operator.

The jig 8 bears against the stop 17 and is brought out of the body 4, and the pusher 10 (with the spring 22 expended) is found outside the seat 9 of the jig 8.

After the core 1 is placed into the seat 9 of the jig 8, the power cylinder 11 is actuated. As the rod 12 of the power cylinder 11 moves towards the jointing plane 2a of the mould 2, the body 4 together with thejig 8, bearing against the roller 18 of the stop 17, turns about the axis 16 of the joint 15 and comes to the vertical position (FIG. 1) where it is fixed in relation to the flange 14 by means of a pin 23.

As the rod 12 moves further in a direction perpendicular to the jointing plane 2a of the mould 2, the body 4 with the jig 8 move in the same direction, and the portion of the core 1 extending from the seat 9 of the jig 8 enters into the corresponding seat 217 of the mould 2.

When the plane of the jig 8 comes in contact with the jointing plane 2a of the mould 2 the jig S stops, while the body 4 keeps on moving in the same direction and travels in relation to the jig 8 along its guides 6. the latter, in turn, travelling in the sleeves 7 of the jig 8.

In the course of this relative travel of the body 4 and the jig 8 the spring 22 of the pusher 10 becomes compressed and the latter starts acting upon the core 1 bringing it home into the seat 2b of the mould 2.

The effort exerted by the core 1 to the mould 2 is determined by the rigidity of the spring 22 of the pusher 10.

After the end faces of the walls of the body 4 contact the jointing plane 2a of the moulg 2 (FIG. 3), the body 4 with the jig 8 start jointly moving in the same direction, the result being pushing of the mould 2 out of the moulding chamber 3 of the machine till this mould 2 abuts the preceding mould 2 of the stack (as shown in FIG. 4).

The spring-biased pusher l0 acts as a shock absorber and protects the core 1 against damage.

Then the rod 12 of the power cylinder 11 moves the body 4 backwards (away from the mould 2) together with the jig 8 sunk flush therein.

In the course of the joint travel of the body 4 and the jig 8 to the initial position the stop 17 enters into the port 19 of the body 4 and urges the jig 8 along the guides 6 of the body 4 to a distance sufficient for the pusher 10 to emerge from the seat 9 of the jig 8.

At the same time said stop 17 turns the body 4 together with the jig 8 about the axis 16 of the joint 15 to the position for placing a next core 1 into the seat 9 of the jig 8 (FIG. 2).

Then the above-described operation cycle of the device is repeated.

What we claim is 1. A device for placing cores into removable-flask moulds, comprising: a body having a port; guides mounted in said body, a jig arranged on said guides with a possibility of travelling in relation to said body in a direction perpendicular to the jointing plane of a removable-flask mould located in the moulding chamber of a machine adapted for making removable-flask moulds; said jig having open core seats; a stationary member; a drive mounted on said stationary member and associated through its movable member with said body so as to reciprocate said body with the jig in said direction; spring-biased pushers mounted in said body, freely entering into the seats of said jig from the side opposite to the location of the cores and acting upon the latter in the course of relative travel of said jig and body, said pushers in the course of subsequent joint travel of said jig and body also acting upon said mould so as to push it out of said moulding chamber; a stop secured on said stationary member from the side opposite to the location of the jig, said stop in the course of the joint travel of said body and jig to the initial position entering into the port of said body and urging said jig therefrom to a distance sufficient for said pushers to emerge from the seats thereof.

2. A device as claimed in claim 1, wherein the body is associated with the movable member of the drive so as to be turnable in a vertical plane passing through the axis of the drive concurently with the emerging of the jig from the body.

3. A device as claimed in claim 1, wherein each pusher is made as a pin whose one end is secured in the body and the other end carries a sleeve freely fitted thereon and spring-biased in relation to the body. 

1. A device for placing cores into removable-flask moulds, comprising: a body having a port; guides mounted in said body, a jig arranged on said guides with a possibility of travelling in relation to said body in a direction perpendicular to the jointing plane of a removable-flask mould located in the moulding chamber of a machine adapted for making removable-flask moulds; said jig having open core seats; a stationary member; a drive mounted on said stationary member and associated through its movable member with said body so as to reciprocate said body with the jig in said direction; spring-biased pushers mounted in said body, freely entering into the seats of said jig from the side opposite to the location of the cores and acting upon the latter in the course of relative travel of said jig and body, said pushers in the course of subsequent joint travel of said jig and body also acting upon said mould so as to push it out of said moulding chamber; a stop secured on said stationary member from the side opposite to the location of the jig, said stop in the course of the joint travel of said body and jig to the initial position entering into the port of said body and urging said jig therefrom to a distance sufficient for said pushers to emerge from the seats thereof.
 2. A device as claimed in claim 1, wherein the body is associated with the movable member of the drive so as to be turnable in a vertical plane passing through the axis of the drive concurently with the emerging of the jig from the body.
 3. A device as claimed in claim 1, wherein each pusher is made as a pin whose one end is secured in the body and the other end carries a sleeve freely fitted thereon and spring-biased in relation to the body. 